THE number of millionaires who will benefit from David Cameron’s April tax cut has soared to 13,000.

Experts had predicted that 8,000 people earning ­£1million a year would get an average tax cut of almost £100,000 – thanks to the PM and Chancellor George ­Osborne’s ­decision to cut the 50p top rate of tax to 45p.

But new figures reveal the number of people earning at least £1m a year has ­rocketed to 13,000, despite the ­economy being on the brink of a triple-dip recession.

The income of Brits who earned more than £1m last year was an astonishing £27.4billion.

HM Revenue and Customs ­figures reveal that the million-pound ­earners would have paid a total of £12.7bn this year at the 50p tax rate.

But that will drop by £1.3bn to £11.4bn when the rate is slashed to 45p.

The cut will come as ­Britain’s poorest are hit by a council tax ­benefits shake-up.